Whenever this happens, I feel like someone is rewriting history. What was changed, and why? Are we now at war with Oceania or Eastasia? In reality, it is most likely a fix of a buggy recording or an audio cut. This service is notorious for publishing errors: leaving bad takes in, inconsistent music breaks and jingles, switching or skipping chapters, etc. But still, without a change log, it feels like someone is changing the inner thread of reality for me.
